96 Early Work in North America 



vine mildew," ^^ a disease studied for many years as a part of 

 investigations of downy and powdery mildews. DeBary discovered 

 the germination of oospores of Plasmopara [Peronospora] vit'i-. 

 cola; and to Farlow's work has been traced discovery of the 

 germination of the conidia of the fungus/'' Dr. Benjamin M. 

 Duggar ^' has classed this work of Farlow and the " incomparable 

 studies of DeBary upon Cystopus, and other forms" as among 

 the "models of mycological research." Research in plant pathol- 

 ogy, Duggar said in 1910, "has gone but little farther." David 

 Fairchild, writing ^^ of Farlow's first graduate student, Byron 

 David Halsted, recollected that Halsted always was "proud of 

 having been Dr. Farlow's first pupil in plant diseases." Fairchild 

 believed that " of the pioneer work on Plowrigbtia movhosa [black 

 knot of plum and cherry] which Dr. Farlow did, [Halsted] was 

 ... an enthusiastic witness." In 1876 was published, ^° well illus- 

 trated, his report on the black knot, another disease which engaged 

 his and other workers' attention for many years. This same year 

 he reported " On a disease of olive and orange trees occurring in 

 California in the spring of 1875." "'' Ten years later he was to 

 present before the Society for the Promotion of Agricultural 

 Science of which he became a member in 1880, "Notes on some 

 injurious fungi of California." -^ Some of his work was for the 

 Massachusetts Board of Agriculture as well as the Bussey Institu- 

 tion. In 1877 he presented before the Board a paper on " Diseases 

 of fruit-bearing trees"" and that same year published in the 

 Institution's Bulletin, " Notes on some common diseases caused 

 by fungi." -^ The year before, he had published a " Synopsis of 

 the Peronosporeae of the United States," -* and the total number 

 of species of Peronospora and Cystopus amounted to ten. In 1883, 



'^^ Bull. Bussey Inst. 1: 415-425 {Peronospora viticola). Farlow's article on the 

 potato rot appeared in the same volume, pp. 319-338. 



'^'^ Phytopathology 2 (6): 235, Dec. 1912. 



''''Phytopathology 1 (3): 72, June 1911. 



'^Phytopathology 9(1): 1-7, Jan. 1919. Halsted's thesis subject was "A classi- 

 fication and description of the American species of Characeae," Bost. Soc. Nat. 

 Hist. Proc. 20: 169-190, March 1879 (W. A. Setchell, op. cit., 6). 



'^ Bull. Bussey Inst. 1: 440-454. 



^" Idem, 404; Jour, of Bot. l4: 287. 



" Proc. 6th Ann. Meet. Soc. Prom. AgrJc. ScL, 29-31, 1885. 



-= Rept. Mass. Board Agr., p. 218, 1878. 



"Z5;///. Bussey Inst. 2: 106, 1877. 



''^ Bull. Bussey Inst. 1: 426. 



